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How to use C++ in Go
...age, how do I call C++ code? In other words, how can I wrap my C++ classes and use them in Go?
12 Answers
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Is C++ context-free or context-sensitive?
...uring-complete, since it shows a program which is syntactically correct if and only if a given integer is prime.
So I assert that C++ is neither context-free nor context-sensitive.
If you allow arbitrary symbol sequences on both sides of any production, you produce an Type-0 grammar ("unrestricted...
Do scala constructor parameters default to private val?
...s there. No field is generated. Otherwise private val bar field is created and value of bar parameter is assigned to it. No getter is created.
private val bar: Int
Such declaration of parameter will create private val bar field with private getter. This behavior is the same as above no matter if t...
Is this a “good enough” random algorithm; why isn't it used if it's faster?
I made a class called QuickRandom , and its job is to produce random numbers quickly. It's really simple: just take the old value, multiply by a double , and take the decimal part.
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Rails migration for change column
...l situations where the existing data, let's say a String can be implicitly converted into the new datatype, let's say Date.
In this situation, it's helpful to know you can create migrations with data conversions. Personally, I like putting these in my model file, and then removing them after all d...
How to compare binary files to check if they are the same?
...
I ended up using hexdump to convert the binary files to there hex representation and then opened them in meld / kompare / any other diff tool. Unlike you I was after the differences in the files.
hexdump tmp/Circle_24.png > tmp/hex1.txt
hexdump /tmp...
How to overcome TypeError: unhashable type: 'list'
...the other answers, the error is to due to k = list[0:j], where your key is converted to a list. One thing you could try is reworking your code to take advantage of the split function:
# Using with ensures that the file is properly closed when you're done
with open('filename.txt', 'rb') as f:
d = ...
GetType() can lie?
Based on the following question asked a few days ago in SO: GetType() and polymorphism and reading Eric Lippert's answer, I started thinking if making GetType() not be virtual really ensured that an object could not lie about its Type .
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How to access command line parameters?
...econd iterated element.
An easy way to deal with the result of args is to convert it to a Vec:
use std::env;
fn main() {
let args: Vec<_> = env::args().collect();
if args.len() > 1 {
println!("The first argument is {}", args[1]);
}
}
You can use the whole standard i...
What is the default access modifier in Java? [duplicate]
... modifier or no modifier (package-private) just as with top-level classes, and with the same meaning.
Full story you can read here (Which I wrote recently):
http://codeinventions.blogspot.com/2014/09/default-access-modifier-in-java-or-no.html
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